---
title: Decoding Denesters
description: Denesting can be a laborious process, but it doesn't need to be. Learn more about Morrison's automatic denesting solutions and what containers work best.
image: https://blog.morrison-chs.com/hubfs/Decoding%20Denesters.jpg
---
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# [Decoding Denesters](https://blog.morrison-chs.com/en/blog/decoding-densters)
[February 22, 2021](https://blog.morrison-chs.com/en/blog/decoding-densters)
Manually denesting containers is a labor intensive, cost-eating process that can often be simply automated on a production line. Denesting machines are designed with accuracy, reliability, and automate this repetitive task of separating and setting a packaging tray on a conveyor line.
Morrison offers various [denesters](https://morrison-chs.com/denesters) that can be used for more than just dropping your container onto a conveyor for the downstream packaging application. That’s right, we’ve denested and renested for applications like code dating too.
To give you more insight into what containers are great candidates for denesting and more about the automation process, we’re turning to Alan Coyle, our customer engineering liaison, to answer some of the most asked questions he’s received over his 15 years at Morrison about our denesters.
**Q: What types of denesters does Morrison offer?**
A: We offer two main types of screw-based denesters: vertical and horizontal. This refers to the orientation of the screw system. Another type of denester we offer is a pneumatic denester. These are pneumatically controlled and drop the container into the specified location based on pre-determined control set ups.
*(Pictured below: vertical denesting (top left), pneumatic denesting (top right), and horizontal denesting (bottom).)*
 
**Q: How do vertical denesters and horizontal denesters work?**
A: [Vertical denesters](https://morrison-chs.com/denesting-cheese-cups) accept the containers from an upright stack and the containers are dropped below onto a conveyor or perhaps into some sort of packaging, like a box or bucket. This is often used for filling and capping. Horizontal denesting is often used for code dating and labeling applications. The screws will accept the containers and separate them so an overhead labeler can apply a label or date to the side of the container, and the containers can be re-nested if needed. [A great example of this is a project we did with flower pots](https://morrison-chs.com/case-study-denesting-flower-pots). In the video, you’ll see how we denested, presented them to the labeler, then renested into specified counts so they could be discharged to a bagger.
**Q: What types of containers can you denest?**
A: Most often we denest trays, cups, lids, buckets, and pots. Whenever a customer is considering purchasing a denester, we will always ask them to send us photos and samples of the container first, so our container handling experts can evaluate them and make sure they are good candidates for denesting. We don’t like to discount containers without having seen them first.
But in short, the best container candidates for denesting are containers where there is adequate space between container flanges (or lips). Typically, we need 1/8” at minimum. Also, sufficient flange exposure is needed (also 1/8” minimum) so we have room to place the threads of the screw and maintain positive control of the container. Another general rule of thumb is the containers need to be rigid, and not compress when handled.
Containers need to be stacked consistently so the flange spacing does not fluctuate and they should stay inline and not tip to one side when vertical. Bad container candidates are containers that compress and stick together under the weight of the stack: think of containers that even the human hand struggles to separate. We still don’t discount these right away, but it does require some extra consideration in the quoting process.
In some cases, if the container does not have a lip of some sort, we can utilize pneumatic denesting.
In the [video example](https://youtu.be/fSr3q72aKVQ), you’ll see the container does not have a lip, but they are easily able to be separated with gravity and positive control. The pads on the system grip the container stack in place, discharging one container into the bucket as the photoeyes sense its presence under the denesting assembly.
**Q: I need to denest multiple stacks. What solution can you offer?**
A: We’ve done this many times, and you can see for example in the [3-up denester video](https://youtu.be/tPgy6Ajgr8A), that we build an assembly to handle the three containers side by side, per plant needs. The options are really endless when it comes to handling the various patterns you need.
**Q: How do the screws denest the containers?**
A: Timing screw technology is a really robust container handling solution because the basics are this: one rotation of the screw equals one container discharged. If it is an indexing application, we program the screws as such so the rotation occurs as needed to give you the desired containers per minute needed for your production.
**Q: I have different containers that need to be run at different times on my system. Do I need to purchase multiple machines?**
A: Absolutely not! Another great thing about timing screws is they can be quickly swapped out on your system and new screws, made for the additional container sizes, can be swapped in. This changeover adaptability allows us to provide you one system that will work for multiple container sizes and different pattern configurations on the same line.
***Have a container you want to automatically denest? [Fill out this form](https://morrison-chs.com/product-inquiry) and we’ll get back to you right away.***
[Allison Wagner](https://blog.morrison-chs.com/en/blog/author/allison-wagner) /
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